(a) General limit on aggregate net credit exposure. No covered company may have an aggregate net credit exposure to any counterparty that exceeds 25 percent of the tier 1 capital of the covered company.

(b) Limit on aggregate net credit exposure of major covered companies to major counterparties. No major covered company may have aggregate net credit exposure to any major counterparty that exceeds 15 percent of the tier 1 capital of the major covered company.